Here are some examples of Oracle alter table syntax to modify data columns and note that you can add constraints like NOT NULL: ALTER TABLE customer MODIFY (cust_name varchar2(100) not null, cust_hair_color varchar2(20)) ;
Did Sir Isaac Newton write any books? His best known book is Principia (Philosophiae Naturalis Principia Mathematica) published in 1687; which includes his laws of motion. Edit
Gravity: â It is the most famous discovery of Isaac Newton. He outlined this theory in the Principia. His concept of gravitational force also helped in explaining the movements of the planets and the Sun. Calculus: â He invented a completely different type of mathematics. He named this new mathematics as âfluxionsâ. Today, it is known as calculus.